Alternatif untuk Presearch untuk Firefox dengan lesen sumber terbuka

• Firefox
  Semua platform Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Blackberry 10 Android Wear iPad Android Tablet Kindle Fire Windows S Web Self-Hosted Firefox Opera Safari Internet Explorer Vivaldi Browser Xbox Chromecast Windows Mobile Slack Chrome Microsoft Edge Telegram Yandex.Browser
• Lesen Open Source
  Mana-mana lesen Lesen percuma Lesen Open Source Lesen komersil